package cn.xtcode.domain.activity.service.discount.impl;

import cn.xtcode.domain.activity.model.valobj.GroupBuyActivityDiscountVO;
import cn.xtcode.domain.activity.service.discount.AbstractDiscountCalculateService;
import cn.xtcode.types.common.Constants;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;

/**
 * @Author xt-code
 * @Description: 满减折扣预算
 * @Create 2025/5/7 11:07
 */
@Slf4j
@Service("MJ")
public class MJCalculateService extends AbstractDiscountCalculateService {
    @Override
    protected BigDecimal doCalculate(BigDecimal originalPrice, GroupBuyActivityDiscountVO.GroupBuyDiscount groupBuyDiscount) {
        log.info("优惠类型:{}",groupBuyDiscount.getDiscountType().getInfo());
        //折扣表达式， 100，10 满100减10
        String marketExpr = groupBuyDiscount.getMarketExpr();
        String[] split = marketExpr.split(Constants.SPLIT);
        BigDecimal x = new BigDecimal(split[0].trim());
        BigDecimal y = new BigDecimal(split[1].trim());

        //不满足满减，按照原始价格
        if(originalPrice.compareTo(x) < 0){
            return originalPrice;
        }

        //满足折扣
        BigDecimal deductionPrice = originalPrice.subtract(y);
        if(deductionPrice.compareTo(BigDecimal.ZERO) <= 0){
            return new BigDecimal("0.01");
        }

        return deductionPrice;
    }
}
